The document discusses the skill of introducing a lesson. It defines introduction as making an attempt to create interest in teaching and establish rapport with learners. The objectives of introduction are to prepare students mentally, focus attention on content, assess prior knowledge, and create curiosity. When introducing a lesson, teachers should not start directly but be casual, write the date and subject clearly, and avoid revealing the title. Components of introduction include testing prior knowledge through questioning, using teaching aids to arouse interest, and having students declare the topic. The document provides examples of introductions in mathematics and social sciences.